Born on Dingir,
Yakov's career as a naval officer was unremarkable, although as a protégé of
Teresa his rise was predictably rapid. Promoted to Deputy Chief of Staff to
Teresa in -2154, Yakov worked closely with the Emperor Teresa before her
disappearance.

Yakov was appointed Regent by the Council of Noble Officers
following the ROS Pericles disaster and held this post for the required
seven years before Teresa was declared officially dead.

Yakov continued
Teresa's policies with little modification. During his reign, Hiroshi I's
Articles of Assumption were rewritten, codifying the leading role of the
Navy in the Rule of Man.